I posted on the day of 6.1's release about my initial dislike for the kaiten removal and crit/potency adjustment. Obviously there's the initial emotional reaction so I took some time and between doing the new content I focused on what I really did think of the new Samurai changes.
My consensus; Samurai is boring now. Considering previous Samurai, a big mood of the job is build up into big hits. And when those numbers direct crit it feels especially good. It was an rng game, sure, but it still felt really good to land that all crit opener and cement yourself in top dps aggro. With the rng gone, you still see the physically big number but the actual value is much lower. Granted, I still retained my aggro spot in raids, so the potency changes weren't as detrimental as I feared. But the satisfaction of that good pull was gone. There's no motivation to shout out "OGI NAMIKIRI" to encourage that direct crit because it doesn't 'feel' that impactful anyways.
Then there's the removal of Kaiten. The big button issue of the last week for Samurai players. In my opinion, Kaiten's removal is probably the worst thing to hit the job in a long time, if ever. Something that has hit a lot of other jobs is the slow change to making everything linear and controlled. You don't need to think about what to hit next, don't need to especially manage resources. Just hit whatever your specific glowing button is and follow the trail. Kaiten was one of the few deviating paths Samurai did have for mixing up what you spent your meter on, and it was a big one too. It allowed for some creativity in situations that made you feel like you could come up with solutions to random problems mid fight. Now your only solution is "boy I sure hope I'm in range to hit Shinten" because you're almost capped on meter so Enpi isn't looking all that appealing. This is a niche example, but I hope it shines on the fact that a big part of Samurai's feel and identity is it's wind up into big number and at least some flexibility with its meter use.
I implore to the dev team once again, please reapply Kaiten. And while you're considering it, please retweak numbers to make Setsugekkas and Namikiris feel satisfying again. I understand the desire for consistency in damage, but that inconsistency is part of what makes Samurai very satisfying to play. And if you're wanting to lower our button count, there's a few redundant aoe buttons with single-target variants that could be combined into one button. Or turning Ikishoten into Namikiri after initial use. There's much better options than what was put into motion this patch.